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Abstract Monoterpene hydrocarbons from the xylem oleoresins of Pinus tropicalis, P. caribaea var. caribaea, P. cubensis and P. maestrensis growing in Cuba were investigated. A large number of… Expand
: Semiochemical interactions between the spruce bark beetle Ips typographus, its predators Medetera setiventris, Thanasimus formicarius and Thanasimus femoralis, and the host Norway spruce, Picea… Expand
The semiochemical relationships in a predator-prey-host plant system were studied by a series of multiple-choice field assays. The studied system included predatory flies of the genus Medetera… Expand
trans-Sabinene hydrate (1), was synthesized from (−)-3-thujol (2) in four steps. The key step was the selective formation of trans-2-hydroxy-3-thujene (6) by photooxygenation of a 3:1 mixture of 2-… Expand
In field experiments in Sweden, the constituent 2-methyl-3-buten-2-ol of the aggregation pheromone of the spruce bark bettleIps typographus (L.) was effectively replaced by 2-methyl-3-butyn-2-ol.